AM-140 Square Wave Generator with adjustable ratio and frequency

Price:
US$7.69
AM-140
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AM-140 Square Wave Generator with adjustable ratio and frequency

This small module uses an LM358 to output a square wave at a frequency determined small jumpers and an adjustable resistance at the end of the module, with the duty cycle adjusted by the potentiometer at the center of the module. Put in between 5 and 12V and it’ll start right away.

The frequency is controlled by four jumpers and fine-tuned by a potentiometer to up to 15s per pulse.

4 jumpers: the maximum pulse length is 15s.

3 jumpers: the maximum pulse length is 10s

2 jumpers: the maximum pulse length is 7s

1 jumper: the maximum pulse length is 4s

0 jumper: the maximum pulse length is 30ms

The duty cycle arrangement goes all the way from 0% to 100%.

Specifications:

Input voltage: 5-12VDC

Output: square wave

Max pulse length: 15s

 

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